|Launched:||25 October 1904|
|Fate:||Sold for scrap, May 1921|
287 tons surfaced|
316 tons submerged
|Length:||135 ft (41 m)|
|Beam:||13 ft 6 in (4.11 m)|
12 kn (22 km/h) surfaced|
7 kn (13 km/h) submerged
|Range:||1,300 nmi (2,400 km) at 8 kn (15 km/h) surfaced|
|Armament:||2 × 18 in (460 mm) bow torpedo tubes|
She was originally to have been called A14 but was renamed B1 on completion, the B class merely being larger and faster versions of the A class, with greatly improved underwater range and fitted with Vickers rather than Wolseley petrol engines.
She was built at Vickers, Barrow-in-Furness and launched on 25 October 1904. She was too primitive to be of much use in World War I and was quickly relegated to training duties. She was sold for scrap in May 1921.
- http://www.beta.submariners.co.uk/Boats/BoatDB2/index.php?BoatID=19%7Cb1 on the Barrow-in-Furness branch of the Submariners Association
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